smith



(No Model.)

0. S. SMITH.-

MACHINERY-0R APPARATUS FOR GOMPRESSING LIME AND OTHER PULVERULENT SUBSTANCES INTO SOLID OR UOHESIVE FORM.

No. 276,487. A PatentedApr.24,]L883.

- 4 Invenior dkarlasf g WWW m QK TEES. Pmmm n m. Washington. a, c

A UNITED STATES- i PATENT OFFICE.

CHARLES s. SMITH, or Lnicnsrnn,

COUNTY OF rinrcnsrnn, ENGLAND. f

MACHINERY 0R APPARATUS FOR COMPRESSING L'lME AND OTHER PULVERULENT SUBSTANCES INTO SOLID 0R COHESIVE'FORM.

SPECIFICATION formingpart of Letters Patent No. 276,487, dated April 24, 1883,

Application filed January 3,1883. (No model.)- Patented in England June 8, 1882, No. 2,693.

T 0 all whom it may concern Be it known that I, CHARLES SEBASTIAN SMITH, a citizen of England, residing at Leicester, in the county of Leicester, England, have invented a new and useful Improvement in Machinery or Apparatus for Compressing Lime and other Pulverulent Substances into Solid or Coherent Form, (for which I have obtained a patent in Great Britain, No. 2,693, hearing date June 8, 1882,) of which the followingis a specification.

In subjecting powdered caustic lime to considerable pressure in dies for forming it into solid cartridges, such as are described in Smith and Moores patent of March 14, 1882, it is essential, in order to effect the compression with more or less uniformity throughout the cartridge, that the pressure should be applied to the material at both ends of the die.

My present invention relates principally to a mode of effecting such pressure without the use of a separate hydraulic ram applied to each end of the die. For this purpose 'I support the die upon springs or equivalent appliances, so that its one end is a certain distance away from a,b ase-plate on which is a stationary plunger entering the said end of the die, while at the other end of the die is situated a second plunger, that is actuated by hydraulic or other pressure. ()n pressure being applied by the last-named plunger to the lime or other material within the die, this will be com pressed .to a certain ex tent at that end, while at the same time, owing tb the friction of the lime against the side of the die, the latter will be forced downward or backward against the action of the springs or ether appliances, so as to cause the stationary plunger to exert the same pressure upon the other end of the charge contained in the die.

It will be evident that presses having the above-described combination of a yielding or movable die with a stationary plunger and a movable plunger are capable of being arranged and operated in a great variety of ways, and also that the invention is equally applicable to the compression of other pulverulent, substances into solid forms besides lime. By way of example I will describe one arrangement of press which I have found well suited for .compressing the lime cartridges above referred to,

I for which purpose I will refer to the accompanying drawings, in which- F'gure l shows a front elevation of'the press; A

movable die B,in which the lime cartridge is to be formed. This die is supported in a slightlyraised position between fixed guides G O by four springs, D D. Entering the lower end of the die is a plunger, E, resting with a shoulder on the bed-plate, and having a stem, E, passing through the same, by means of which it can be pushed up in the die, as will be presently described. F is a hydraulic cylinder fixed in an inverted position to the under side of the press-framing K, the cross-head G of its piston-rod being connected by rods H H to a shaft, I, above the die. This shaft has its ends guided by blocks sliding in the framing K, and has fixed upon it an eccentric, L,

working in a block, M, sliding laterally in a guide, N, to the'under side of which is fixed j the compressing-plunger O. a hand-wheel, l, by-which it caufbe turned from the position shown in Fig. 2 to the'oppo- The shaft I has site position-that is to say, with its throw r directed downward in line with the plungers and die. The guide N also carriestworods, i

l? P, passing down through the bed-plate A, and provided with heads at their lower ends, for-a purpose to be presently explained.

The mode of operating with the press is as follows: The die B being charged with the pulverulent lime while the guide N, with plunger 0, is in the raised position shown, the shaft I is turned halt round, so as to cause the eccentric to move downward the guide N and plunger 0 until the latter has entered the upper end of the die and effected the initial compression of the lime, such compression requiring comparatively little power. The eccentric L being on its dead -center, downward, fluid-pressure is admitted to the cylinderF-above its piston, whereby the cross-head Gr, rods H H, shaft I, guide N, and plunger 0 ICQ are all forced downward, causing the plunger 0 to exert a corresponding pressure on thei charge in the die. This pressure will be employed partly in compressing the upper part of the charge and partly in forcing the die downward, owing to the frictional resistance of the lime against the surface of the die, and" by such downward motion of the die the lower end of the charge will simultaneously be compressed by the stationary plunger, the position of the parts being then as shown in the section at Fig. 6. The lime cartridge being thus effectually compressed from both ends, it requires firstto be loosened from the die, and then to be removed therefrom. For these purposes the plunger-stem E has pivoted to its lower end a coupling-lever, Q, having notches QQF, which, when the leveris turned by hand into the position shown in Fig. 5, are made to embrace the rods P P, which by the before-described downward motion of N in compressing the charge willhave been brought down to the level of the stem E, as shown at Fig. 5. By the said motion of the levera pin, Q thereon, taking into a hole into the arm S, carrying the block S, and pivoted to the strong cross-bar It, attached to the rods H, causes the arm S tobrin g the block S between the lower end of theplunger-stem E and the barR. 0n the fluid-pressure being now ad mitted to the under side of the piston of cylinder F (by means of suitable cocks or ,valves and-passages not shown) the crossrhead Gr,

rods H, and bar It will be raised again and will cause the block S to push the plunger E upward, so as to release the cartridge from its hold; on the die. The hydraulic piston having completed its upward stroke, the shaft I, with its eccentric L, is now turned so as to raise theguideN, plunger 0, and rodsP totheir origi-- nal position again, and the couplingof E to the rods P P by the lever Q. will cause the.

plunger E to be raised up in the die so as toentirely lift out the com pressed cartridge, after which the plunger is uncoupled from P P again and drops into its original position on the plate A, and the press is ready for operating on another charge. In order to facilitate the loosening of the cartridge in the die, the

so that on the last-named plunger being made to compress a chargein the die or mold .it will also cause the latter to move toward the stationary plunger, so as to effect compression at both ends of the charge.

2. In combination with the mold or die B, supported in a raised position by springs-D, or their equivalents, the stationary plunger E andmovable plunger 0, arranged and operating substantially as herein described with reference to the accompanying drawings.

3. The compressing-plungerO, mounted on a slide carried byan eccentric, by meansot' which the-plungerzcan be made to eifectthe initial compression ofthe lime within the die, or: mold Bbefore the greater pressure by hydraulic. or other power is applied thereto, substantially as herein described.

4. The combination of the die 13, plungersE,

and O, shaft I, eccentric L, fluid-pressure cylinderF, and rods H H, arranged and operat ing substantially as-herein described.

5. In combination with the plunger E, the stem E, withcoupling-leverQ, and rods P 1?, carried by eccentrics =L, arranged and operatin g substantially as herein described.

In testimony whereof I have signed my name to this specification,in the presence of two subscribingwitnesses, this 5th day of December, A.D=. 1882.

CHARLES SEBASTIAN SMITH.-

W-itnesses HARRY UAMPTON, J. DnELLIS,

Clerks to :Messrs, Fowler, Smith d3" Warwick,

I Sela, Leicester. 

